Which version of R is running in my computer?
Run R --version
there's info about version on the first line.
Edit: If you ask this question then I bet that R is not running from any of these directories. Check $PATH env variable to get information where binaries are looked for and in which order.
Edit 2: Use type
shell command to find where binary for given command is stored, -a
for all paths, -f
for the hashed one (basically: most recently used).
05/20/2021 Update:
In the R terminal, type R.version
.
In addition to @Piotr Jaszkowski, R.Version()
should do the work as well